20447217

素因数分解:

$3^2\times 7^1\times {\mathrm{59}}^1\times {\mathrm{5501}}^1$

素因数の和:5573

約数の個数: 24

約数和(自身を含む): 34332480

約数和(自身を除く): 13885263

約数列:

[1, 3, 7, 9, 21, 59, 63, 177, 413, 531, 1239, 3717, 5501, 16503, 38507, 49509, 115521, 324559, 346563, 973677, 2271913, 2921031, 6815739, 20447217]

約数ペア:

[(1, 20447217), (3, 6815739), (7, 2921031), (9, 2271913), (21, 973677), (59, 346563), (63, 324559), (177, 115521), (413, 49509), (531, 38507), (1239, 16503), (3717, 5501)]